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    <title>polar</title>
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    <center>Scilab Function</center>
    <div align="right">Last update : April 1993</div>
    <p>
      <b>polar</b> -  polar form</p>
    <h3>
      <font color="blue">Calling Sequence</font>
    </h3>
    <dl>
      <dd>
        <tt>[Ro,Theta]=polar(A)  </tt>
      </dd>
    </dl>
    <h3>
      <font color="blue">Parameters</font>
    </h3>
    <ul>
      <li>
        <tt>
          <b>A</b>
        </tt>: real or complex square matrix</li>
      <li>
        <tt>
          <b>Ro,  </b>
        </tt>: real matrix</li>
      <li>
        <tt>
          <b>Theta,  </b>
        </tt>: real or complex matrix</li>
    </ul>
    <h3>
      <font color="blue">Description</font>
    </h3>
    <p>
      <tt>
        <b>[Ro,Theta]=polar(A)</b>
      </tt> returns the polar form of
   <tt>
        <b>A</b>
      </tt> i.e.  <tt>
        <b>A=Ro*expm(%i*Theta)</b>
      </tt>
      <tt>
        <b>Ro</b>
      </tt> symmetric &gt;=0 and <tt>
        <b>Theta</b>
      </tt> hermitian
   &gt;=0.</p>
    <h3>
      <font color="blue">Examples</font>
    </h3>
    <pre>

A=rand(5,5);
[Ro,Theta]=polar(A);
norm(A-Ro*expm(%i*Theta),1)
 
  </pre>
    <h3>
      <font color="blue">See Also</font>
    </h3>
    <p>
      <a href="expm.htm">
        <tt>
          <b>expm</b>
        </tt>
      </a>,&nbsp;&nbsp;<a href="svd.htm">
        <tt>
          <b>svd</b>
        </tt>
      </a>,&nbsp;&nbsp;</p>
    <h3>
      <font color="blue">Author</font>
    </h3>
    <p>F. Delebecque INRIA; ;   </p>
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